/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraParameterMapHistory.h
Does this parameter start with the "Emitter" namespace? Note that the emitter namespace is an alias for Emitter and System script types and will be specialized to the name of that specific emitter.
namespace FNiagaraParameterUtilities { bool FNiagaraParameterUtilities::IsAliasedEmitterParameter ( const [FString](API\Runtime\Core\Containers\FString) & InVarName ) }